Improvement in the manufacture of albumen



, by a hydraulic dllltillll some abent Gtflfline.

GUSTAVE BOURGADE, OF-NEW YORK, NLY.

LettersPatent 1v 107,158, dated September 6, 1870.

To all whom it may concern.-

Be it known that I, GUsTAvE BOURGADE, of the city and State of New York, have invented an Improvementin the Manufacture of Albumen and the following is declared to be a correct description thereof.

My present invention is an improvement upon the invention heretofore made by me on the same subject,

and on which a patent has'been allowed to me.

I find that blood which has become partially putrid or fermented can be used to' advantage, but I do not limit myself in this particular.

I introduce into the blood an alkaline solution of any desired character; it may be carbonate ot'ammonia, or slaked lime and spirits of ammonia, or slakcd lime alone. The spirits of ammonia are especially required where fresh blood is used. From two to seven per cent. of the alkali is generally sufficient.

The liquid is poured into a, closed or open vessel. When a closed vessel is used I distil in vacuum, so as to evaporate considerable of the aqueous portions. 1' prefer to employ a closed vessel and distil in vacuum, so that the evaporation may be rapid, and only a very low temperature be employed. say, from 160 to 175 l ahrenheit. In this manner from ten to thirty per cent. of water may be evaporated.

f The spongy cake that remains after evaporation contains the albumen in a liquid condition, the other portions of the blood being sufficiently solidified to prevent their being pressed out with the albumell. wl|eu the mass is subjected to a powerful pressure in a bag,

or other press.

The albumen that is pressed out is of a clear gold color, but, in order to remove any tbreign matter, I make use of from tln-ee-quartersot' one per cent. to one and a halt per cent. of an acid, (mnriatic acid preferred,) the same beingthoronghly mixed with the al bmnen, and then the liquid filtered in the presence of lime, to neutralize any free acid remaining. The lime may be in a bag suspended in the filter. I

The albumen now free from odors and pure, or nearly sl), is to, be concentrated in any suitable drying apparatus; I prefer and use a vacuum-pan to concentrate the albumemwhich can be done under a term Perature 0t'125 to 150 Fahrenheit.-

The albumen in its conbentratedstate is poured into pans and dried in a few hours, and is of a very light color, and superior to any albumen of commerce heretofore made.

In consequence of the use of ammonia, a greater yield of albumen than heretofore, can be obtained, especially from fresh blood. The ammonia aids in forming a perfect solution of the albumen with the water, so that when applied to fresh blood, there will be a larger proportion of albumen than heretofore.

The separation can be pertbrmed by filtration under vacuum action. A layer of line willow charcoal, coal, orsand may be put upon the filter to advantage, and the cake remaining maybe pressed by a hydraulic press or otherwise, to remove any albumen rcmaining. The albumen in this stage is mixed with considerable water, and is to be concentrated in a vacuum, as before.

. When partially fermented. or use of, the yield is better; treated with pro. ox. azote, or other material to hasten fermentation.

When the said material is of the gaseous cba 'acter named, it is to be forced into the blood, orpass thereinto as generated through a suitable tube.

The residuum in the press may be-used as a fcrtilizer, after being ground or pulverized, or it may be employed for any other purpose to which it is available.

About twenty-five per cent. of this pulverized blood maybe mixed to advantage with the fresh blood, to hasten the decomposition or separation of the albumen.

I claim as my invention-- 1. The use of liquid ammonia in the albumen from blood, by specified.

2. The em of albumen, forth.

3. The process herein specified for separating albuputrid blood is made separation of the process substantially as ployment of an acid in the purification by the process'and substantially as set men from blood, and concentrating the same 'in cacao.

Signed this 19th day ofJuly, A. D. 1870.

GUST. BOURGADE. Witnesses:

H Anon) 'SERRELL, Geo. T. PuvoKnEY.

hence, fresh blood may he 

